Operating means for dredging-buckets.



A. N. DOUD.

OPERATING MEANS FOR DREDGING BUCKETS. APPLICATION FILED Nov.vI8, I9I3.IIEIIwED MAY Ia. ISIS.

1,164,076, A Patented Dec. 14, 1915.

3 SHEETS-SHEET 1.

. ,l III WITNESSES A. N. DOUD.` OPERATING MEANS FOR DREDGING BUCKETS.lcATloN FILED Nov.1e. 1913. RzNEwEn MAY1s.1srs.

APPL

Patented Dec. 14, 1915.

3 SHEETS-SHEET 2 WITNESSES ATTORNEY A. N. DOUD.

OPERATING MEANS FOR DREDGING BUCKETS.

APPL1cAT1oN 111.150 Nov. 18. 1913. RENEwED 11111113.1915.

a sHEErs-sHE1-1T a. 37

WITN ESSES q ATTORNEY UNJTED STARg FFllQlE.

ARTHUR NATI-IAN DOUD, OF CLEVELAND, OHIO, ASSIGNOR TO THE LAKEVJOOI)ENGXNEERING COMPANY, OF CLEVELAND. OHIO, A. CORORATION OF OHIO.

OPERTNG lv'IEANS FR DREDGINGBUCKETS.

Specification of Letters Patent.

Patented Dec. liet, i915.

Application led November 18, 1913, Serial No. 801,703. Renewed May 1S,1915. Serial No. 27,933.

To al? whom it muy concern Be it known that l, ARTHUR N. DoUD, lacitizen of the United States, residing at Cleveland, in the county ofCuyahoga and State of Ohio, have invented a new and useful OperatingMeans for Dredging-Buckets, of which the following is a specification.

This invention has reference to improvements in operating means fordredging buckets, and is particularly applicable to the operation cfclamshell buckets.

ln accordance with the present invention there is provided an attachmentfor a derrick boom, or the latter may have the essential features of theattachment built thereinto initially, and the attachment provides ameans whereby a single line mav be employed for operating the bucket.The usual releasing or trip line, instead of being attached to thebucket, is carried by the boom so that instead of there being a greatsurplus of line which has to be taken care of as the bucket is raisedand lowered, as in prior constructions, the trip line remainspractically always of the same length regardless of the position ordistance of the bucket from the operator.

lltoreover, the present invention has to do with the arrangement wherebythe rope or line is roved through the bucket and boom sheaves and withthe structures whereby the bucket line is controlled.

rlhe present invention distinguishes in numerous particulars from singleline bucket structures as heretofore proposed, which prior bucketstructures are customarily operated by means of hook arrangementsattached to the bucket proper', and are released by means of trip linesthat are attached to a releasing mechanism connected to the bucket.

rlhe invention will be best understood from a consideration of the.following detailed description, taken .in connection with theaccompanying drawings forming a part of this specification, with thefurther understanding that while the drawings show a practical form ofthe invention, the .latter is not confined to any strict conformity withthe showing of the drawings, but may be changed and modified so long assuch changes and modifications mark nematerial departure from theVsalient features of the invention.

lnthe drawings: Figure l is an elevation of a boom attachment and bucketembodying the present invention, the bucket being shown close to theboom and closed. Fig. 2 is an end elevation of the structure shown inFig. l with the boo-m shown in cross section. Fig. 8 is a section on theline 3-3 of Fig. Q, but showing `the bucket closer to the boom and open,some of the more distant sheaves being shown in cross section to avoidhiding the rope or line. Fig. -l is a section on the line 4-4 of Fig. 3with some parts in elevation and the rope or line and distant partsomitted. Fig. 5 is a side elevation of a boom with the attachmentforming a part of the present invention built thereinto.

Referring to the drawings, and more particularly to Figs. l to t, thereis shown a portion of the outer end of a boom l which may be taken astypical of any suitable derrick boom whether made of wood or metal, andwhether of solid construction, as indicated, or of skeletonconstruction, as is the custom with steel booms. Attached to the boom bybolts 2 or in any other suitable way, is a frame 3 which may be ofchannel form with a top plate 4t and side or cheek plates 5 all suitablyunited, the channel member being openat what may be termed the lower orbottom edge. The channel member is attached to the beam near its outerend at the point usually occupied by the sustaining pulley or pulleysfor a bucket, the latter being indicated generally at 6, and as in mostpart thebucket may be of known construction, reference will be made toonly such parts of the bucket as it may be ne essary to mention in thefollowing description. Mounted in the channel member 3 near therespective ends are sheaves 7, S, these sheaves being located onopposite sides of the longitudinal center line of the channel member. Atan intermediate point the channel member has mounted therein a drum 9 having a ournal or spindle 10 projecting through and for a distancebeyond one of the side plates 5 and there carrying a fric tion wheel llencircled by a friction band 12, and as this friction band may followthe customary construction, it needs no special detailed description.Extending through the side plate 5 traversed by the extended end of theshaft or journal 10 is a rock shaft 13 carrying at its outer end a rockarm 14 fast thereto, while between the side plates 5 the rock shaft 13has an eccentric portion 15 in position to engage a plunger 16 mountedin a guide block 17 secured in the channel member between the sideplates 5. The rock arm 111 is attached to one end of the friction band12 by a link 18 having adjustable lock nuts 19 thereon, so that therelation of the band to the arm 14; may be adjusted as needed, while theother end of the friction strap is formed into a loop surrounding a stud20 mounted on a bearing plate 21 on the corresponding side plate 5, or,if desired, directly upon the plate. Secured to the outer end of the arm11 is a line 22 which may be and usually is connected to the basic endof the boom and from thence into reach of the operator, the arrangementbeing such that upon a pull on the line 22 the rock arm is moved in adirection to draw the friction band 12 into engagement with the frictiondrum 11, so that the band and drum become in effect a brake and the drum11 being keyed or otherwise made fast to the shaft 10 of the drum 9, thelatter is con` trolled by the brake. Movement of the arm 111 in adirection to apply the brake so moves the cam 15 as to in4 turn cause amovement of the plunger' 16 toward the boom and in thepath of theplunger 16 there is a removable hardened steel plate 23 for a purpose tobe described. Mounted in the boom 1 adjacent to the sheave 7 is anothersheave 24 for a purpose which will hereinafter appear. Mounted on aspindle 25 immediately above the pvot 26 of the two halves of the bucketare three sheaves 27 28 and 29, respectively, and at a higher point onrespective bail arms 30 of the bucket are other sheaves 31 and 32,respectively, and adjacent to the sheaves 31 and 32 and at a somewhathigher point are other idler sheaves 33, 31, respectively, while atappropriate points are guard rollers or sheaves 36. There is provided asingle operating rope or cable 37 coming from the winding drum of thederrick engine, not shown, and passed about the sheave 24, thence partlyabout the sheave 7, thence to the sheave 34; of the bucket, thence aboutthe sheave 27 in underriding relation thereto, thence to and around thesheave 31, returning to and in part encircling the sheave 29, thence toand about the sheave 32, returning to the sheave 28 in underridingrelation thereto, and then to the sheave or roller 33, from whence thecable is continued to and in part about the sheave 8, and is thencontinued to the drum 9 about which the cable is wrapped one or more,and preferably two times, and finally is carried to an eye 38 at thejunction point of theI bail arms 30 of the bucket. That run of thel ropeor cable 37 between the sheave 8 and the drum 9 is located between theplunger 16 and the removable plate 23 so that upon the active movementof the plunger 16 under the impulse imparted by the cam or eccentric 15the run of the rope between the sheave and drum may clamp against theplate 23.

Fig. 5 differs from the structure of the other iigures in that there isshown a skeleton steel boom 1n with sheaves 7a and 8, similar to thesheaves 7 and 8 and mounted directly in the boom 1, the latter being provided with side )lates 5a or beinO otherwise constructed to support thesheaves. Between the sheaves 7L and 8 the boom carries a drum 9it andoutside of one of the side plates 5a the shaft 10a of the drum 9a haskeyed thereto a friction or brake drum 11a encircled by a friction orbrake band 12a, and the latter is coupled to a rock arm 14a in turnconnected to a rope or strand 22a which it is to be understood leadsinto convenient reach of an operator. Vhile the plunger 16 is hidden inthe structure shown in Fig. 5, it will be understood that it is presentand a removable bearing plate 23EL is mounted on the boom la. Thestructure shown in Fig. 5 is in all essential respects the same as thatshown in the other figures of drawing, and the bucket structure isassumed to be present and to be the same as before. Since the sheave 7ais built into the boom in the structure shown at 5, the sheave 241 isunnecessary, and is. therefore, omitted.

In Fig. 1 the bucket is shown as closed and it may be assumed that thebucket is filled and rising. Under these circumstances the brake band 12is loose and the plunger 16 is out of engagement with that run of thecable 37 extending between the sheave 8 and drum 9. The pull of thecable is in the direction of the roving thereof through the bucketsheaves and the group of sheaves 27, 28 and 29 is held elevated, so thatthe bucket remains closed and at the same time that run of the cablebetween the drum 9 and the eve 38 is rising, the bucket following. Whenthe requisite height has been attained, and it is desired to dump thebucket, the strand 22 is actuated to move the rock arm 1st4 in adirection to tighten the brake band 12 upon the brake drum 11, and atthe same time move the plunger 16 against the run of the cable betweenthe sheave 8 and drum 9, so as to force it against the plate 23, thusclamping it in position and augmenting the frictional hold of the drum 9upon the cable 37, for in large buckets the frictional hold of the cableupon the braked drum 9 may be insuiiicient. With light outfits theclamping plungerV 16 may be omitted, although eminently serviceable whenthe buckets are large. The bucket is held in the elevated mesme positionby the clamped portion of the cable, andthe portionof the cable 37coming from the hoisting engine may be released, Whereupon the cableivill be slackened Where passing about the sheaves carried by the bucketand the'bucket will open in the usual man ner to dump its contents. Thearrangement of the parts is the same for closing the bucket as foropening it, except that the direction or' movement of the main portion fthe cable 37 is reversed. To elevate or loiver the bucket the drum 9 isreleased 'from thevbi'ake band 12 and the plunger i@ is at the sainetime retracted.-

Since the tripping line or strand 22 is connected to tripping mechanismcarried by he `boom instead of by the bucket, this line or strand 22follows all the movements oi the boom and is unaffected by anymovementof the bucket,`vvherefore there is but little movement of the operatingor trip line, and it is unnecessary that there be any particular surplusthereof, 'for there is nothing to be taken care oit, so ar as the tripline is concerned, While the bucket is being raised and loivered. Thisis brought about by the employment or the structure attached to the boomor built into the boom, as the case may be. Moreover, the manner ofroving the operating line through the bucket sheaves and about thefriction brake and in operative relation to the clamped plunger,Whilesuscentible of change and modiication for different types ofbuckets, is oi' importance in connection with the type of bucketillustrated.

-In the claims the Word rope is used as designating any suitableiieXible strand for `and a brake and a` clamp on the boom for the rope.y

2. In a dredging apparatus, the combination with a clam-shell bucket, ofa single rope, bucket opening and closing means on the bucket associatedWith and responsive to the single rope, and rope-controlling meansadapted to be carried by a part of the dredging apparatus other than thebucket and comprising a direction-changing means for the rope, abrakeand a clamp for the rope.

3. In a dredging apparatus, the combination with a clamshell bucket, ofa single rope, bucket opening and closing Y means on the bucket andassociated With and responsive to the single rope, and rope con'-trclling means adapted to be carried by a part of the dredging apparatusother than the bucket and comprising a drum for receiving the rope, aband brake i'or the drinn, a clamp for theiope, and a single operatingmeans common to both the and brake and the clamp.

li. ln a dredging machine, the combination With a clam-shell bucket,comprising members hinged together for opening and closing, sustainingmembers connected to the hinged members at outer portions thereof, anddirection-changing members carried by the hinged connections andsustaining members, respectively, of a single Vrope connected at one endto the sustaining members and roved through directionchanging members onthe bucket, and means separate from the bucket for braking and clampingthe rope and having direction changing means associated therewith.

5. In a single rope derrick hoist 'for clamshell dumping buckets, aboom, brake means for the single rope mounted on the boom, clampingmeans for the rope'also mounted on the boom adjacent to said brakemeans, and common operating means itorthe brake and clamp means.

6. n a single rope derrick hoist for clamshell dumping buckets, a boom,directionchanging sheaves on the boom spaced apart in the direction ofthe length of the boom, a brake means for the single rope mounted on theboom between the spaced sheaves, and a clamping means for the ropemounted on the boom between the brake means and one of the sheaves.

7. ln la single rope deriick hoist 'for clam shell dumping buckets, aboom, directionchanging sheaves on the boom spaced apart in thedirection of the 4length oi the boom, a brake means for the single ropemounted on the boom between the spaced sleeves, and a clamping means torthe rope mounted on the boom between the brake means and one oi' thesheaves, the brake means ane the clamping means being provided with asiiigle oiiierating means common to both.

8. in single-rope derrick hoists for dumping buckets, combinationivith'the derrick boom of a drum mounted on the outer end portion of thederrick boom in position to be'eiicircled by the single hoisting rope, abrake for the drinn.y a clamping means acent to the drum and in positionto enthe hoisting rope, and a common opermeans for the brake means andclampin@ erable to move the brake means and clamping meanssimultaneously in the same direc- 9. ln single-rope derrick hoists fordumping buckets, a boom, a drum mounted on the boom in position to beencircled by the single hoisting rope, a rake means for the nrum,

,rope adjacent to the drum and also mounted Vdrum and direction changingmeans in posi- `V tion to engage the hoisting rope, and operating meansfor the brake means and clamp means common to both and operable to moveboth simultaneously to the active or inactive position. Y

l0. In single-rope derrick hoists for dumping buckets, a boom, a Vdrummounted on the boomrin position to be encircled by the single hoistingrope, a direction changing sheave mounted on the boom adjacent to thedrum, a brake for the drum, a clamping means on the boom between thesheave and drum and comprising a plunger moifable to engage the run of'the rope between the sheave and drum, and a commen operating means forthe Vbrake and plunger carried by the boom.

11.. In single rope derrick hoists for,

dumping buckets, a boom, a drum mounted on the boom in position to beencircledby the single hoisting rope, a direction-changing sheavemounted on the boom adjacent to the drum, a brake'for the drum, aclamping means on the boom betiveen the sheave and drum and comprising aplunger movable to engage therrun of the rope between the shea've anddrum, and a common yoperating means for the `brake and plunger Vcarriedby the boom, said clamping means including a removable plate in coactiverelation to the plunger to receive the thrust of the plunger Vwith therope interposed.

l2. In single rope derrick hoists for vdumping buckets,'a boom, ay drummounted on the boom in position to bev encircled by the single hoistingrope, direction changing sheaves on opposite sides of the drum, andbraking means for the drum.

13. In single rope derrick hoists .for

dumping buckets, a boom, a drum mounted on the boom in position to beencircled'by the single hoisting rope, direction changing sheaves onopposite sides oi the drum, a brake means for the drum, a clampingmeansintermediate of the drum and one of the sheaves, and common operatingmeans tor the braking means and clamping means.

14. In single rope dei-rick hoists, the combination with a clam-shelldumping bucket having sheaves adjacent to the bucket members and othersheaves more distant therefrom, of a dei-rick boom, a drum on the der-Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patients,4

rick boom atthe outer portion thereof, a

brake means on the kboom for-the drum, di-

rection changing means on Vthe boom adjacent to the drum, and a singlehoisting Vrope connected at one endto the .bucket and then Y Y Wrappedabout the druinand from thence roved through the several sheaves on thebucket and boom. Y

15. In single rope dei-rick hoists, the combination with a dumpingbucket .having sheaves adjacent to the bucket members and other sheavesmore distant therefrom, of a deri'ick boom, a drum on the derrick boomat the outer portion thereof, a brake means on the boom for the drum,direction chang-n ing means .on the boom adjacent to the drum,

`and a single hoisting rope connected at one' end to the bucket and thenWrapped about the -drumand from thence roved throughv the severalsheaves on the bucket and boom, the boom also carrying a clamping meansadjacent to the drum with direction chang-V ing means adjacent totheclamping means, and'coinmon operatingmeans on the boom 'for the brakingmeans and clamping means.

16. The combination With a clamshell bucket, of a single sustainingrope-connected thereto, opening and Vclosing'ineans'itor the bucketlocated thereon and means in coperative relation to Vand associatedWith'the single rope and bucket, whereby the lifting and lowering andthe opening and closing of the. bucket at any point-iiiv its upand downmovements are brought about by the single rope.V

17. The combination with a derrick'bo'oin and a clam-shell bucket, ot'-a singlesustainingl rope for the bucket, and means on the bucket incooperative relation to and asso-VY ciated with the single rope and onthe boom in coperative relation to and associated with the single rope,whereby the lifting and` lowering of the bucket and thel opening andclosing of the bucket at anyY point in its up andV down movements are'brought 'about by the single rope.. Y Y v In testimony, that I claimtheV oregoing'as in the presence of tivo, Witnesses.

my own, I have hereto affixedmy-signature4 ARTHUR ivi-@Hainnoun.Y Y

' `Witnessesz l JOHN L. BAnsBY, D. WV. KITTLE.

Washington, D. C.

